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Apparatus and method of driving discharge tube lamp and liquid crystal display using the same

  • US 8,421,739 B2
  • Filed: 06/11/2002
  • Issued: 04/16/2013
  • Est. Priority Date: 02/09/2002
  • Status: Expired due to Fees
First Claim
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1. A driving apparatus having a discharge tube lamp, comprising:

  • a DC power supplier for producing DC power;

    a burst mode inverter for converting the DC power to AC power, wherein the inverter responds to a Pulse Width Modulation frequency to modulate the DC power to produce the AC power, wherein the AC power is pulse width modulated; and

    a controller for generating the Pulse Width Modulation frequency and adjusting a duty-on-time of the Pulse Width Modulation frequency in the range of about 40% to 99%,wherein the controller multiplies a frame frequency to generate the Pulse Width Modulation frequency, and wherein the controller adjusts the duty-on time of the Pulse Width Modulation frequency to be within 40% and 99% of one period of the Pulse Width Modulation frequency.

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